Author: Cactus Studio to create dynamic Web pages of new technology has to serve as the basis of all CLR rewrite. So far, all .NET provided languages can be used to write ASP.NET pages, but the extension of the page and the ASP 3.0 are different. Specifically, the simple web page is ".aspx" as the extension, the web service is ".asmx" as the extension (from "Assembly"), a ASP.NET page called Pagelet can be reused. " ASPC "is an extension. .NET application can run .asp and .aspx pages simultaneously. The old ASP page will run directly by Asp.dll, but it cannot utilize the functionality of the CLR. Now, .aspx page no longer interprets execution, but is compiled into a MSIL code when the first call appears, and then runs in an intermediate code, just like JSP in the J2EE environment. A logical conclusion is that performance will be improved, and Microsoft claims that it can be comparable to the level of application performance with Visual Basic 4 to compiling version 5. In addition to understanding all the new concepts introduced by VB.Net, these fundamental changes have also requested greater changes to the Writing method of the ASP page. In order to understand the work you have to do from ASP to ASP.NET, let's analyze the main changes. These modifications belts three levels: Changes between the modified page structure in the API VBScript and VB.NETs ASP.NET only allow each page to use a language. In DNA, the ASP page can use JScript and VBScript simultaneously; but ASP.NET no longer allows this usage. In ASP.NET, the function must be surrounded by an HTML